<template>
  <div class="container">
    <!-- 面包屑 -->
    <div class="bread-container">
      <el-breadcrumb separator=">">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item :to="{ path: `/category/${subCategoryData.parentId}` }">{{ subCategoryData.parentName }}
        </el-breadcrumb-item>
        <el-breadcrumb-item>{{ subCategoryData.name }}</el-breadcrumb-item>
      </el-breadcrumb>
    </div>
    <div class="sub-container">
      <el-tabs v-model="reqData.sortField" @tab-change="tabChange">
        <!-- Element Plus 的 <el-tabs> 和 <el-tab-pane> 组件实现的商品排序方式切换栏，用于在子分类页面中切换不同的商品排序规则 -->
        <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
        <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
        <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
      </el-tabs>
      <div class="body" v-infinite-scroll="load" :infinite-scroll-disabled="disabled"> <!-- 关闭监听传进去一个变量控制就行了，不错-->
        <!-- 商品列表-->
        <GoodsItem v-for="good in goodList" :key="good.id" :goods="good"/>
      </div>
    </div>
  </div>
</template>

<script setup>
import { useSubCategory, useSubCategoryGoods } from "@/views/SubCategory/composables/useSubCategory.js";
import GoodsItem from "@/views/Home/components/GoodsItem.vue";

const {subCategoryData} = useSubCategory();
const {goodList, reqData, getNewPageGoodList, disabled} = useSubCategoryGoods();

// tabs 切换
function tabChange(sortField) {
  reqData.sortField = sortField;
  reqData.value.page = 1
}


// 加载更多
function load() {
  console.log('load')
  // 获取下一页数据
  reqData.value.page++
  getNewPageGoodList().then(res => {
        goodList.value = [...goodList.value, ...res.result.items] // 老数据和新数据拼接
        // 加载完毕 结束监听
        if (res.result.items.length === 0) {
          disabled.value = true;
        }
      }
  )
}

</script>

<style scoped lang="scss">
.bread-container {
  padding: 25px 0;
  color: #666;
}

.sub-container {
  padding: 20px 10px;
  background-color: #fff;

  .body {
    display: flex;
    flex-wrap: wrap;
    padding: 0 10px;
  }

  .goods-item {
    display: block;
    width: 220px;
    margin-right: 20px;
    padding: 20px 30px;
    text-align: center;

    img {
      width: 160px;
      height: 160px;
    }

    p {
      padding-top: 10px;
    }

    .name {
      font-size: 16px;
    }

    .desc {
      color: #999;
      height: 29px;
    }

    .price {
      color: $priceColor;
      font-size: 20px;
    }
  }

  .pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }
}
</style>